Correction: A Homozygous PPP1R21 Splice Variant Associated with Severe Developmental Delay, Absence of Speech, and Muscle Weakness Leads to Activated Proteasome Function

Andreas Hentschel; Nancy Meyer; Nicolai Kohlschmidt; Claudia Groß; Albert Sickmann; Ulrike Schara-Schmidt; Fabian Förster; Ana Töpf; Jon Christiansen; Rita Horvath; Matthias Vorgerd; Rachel Thompson; Kiran Polavarapu; Hanns Lochmüller; Corinna Preusse; Luis Hannappel; Anne Schänzer; Anika Grüneboom; Andrea Gangfuß; Andreas Roos